Moetising machine



(No Model.) 3 Sheets-Shet 1.

H. PEYH.

MORTISING MACHINE.

' No. 281855. Patented July 24, 1883.

N ERS. Phuwumo n hen Wnhington. n c.

- (No Model.)

4 3 Sheets-Sheet a H. PEYH.

MORTISING MACHINE.

Patented July 24, 1883.

WITNESSES. LZENTOR ATTOR UNITED STATESi PATENT GFFIcE.

& WVATERS,

MORTISINQ- SAME PLACE.

MACHINE.

SPECIFICATION forming part of Letters Patent No. 281,855, dated July 24, 1883,

Application filed May 3, 1882. (No model.)

To all whom it may concern.-

Be it known that I, HENRY FEYH, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Mortising-Machines, and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which Figures 1 and 2 are perspective views. Fig. 3 is an elevation, and Figs. 4. and 5 are sectional detail views of my improvements.

My invention has relation to mortising-machines; and my improvements have for their object to provide a construction whereby the following results will be obtained: First, the chisel, when not in operation, will stand in an elevated position above the table, so as to permit the stuff which is to be mortised to be placed upon said table without interference with or impediment from said chisel; second, the extent of stroke of said chisel may be graduated or regulated; third, the jarring or shock heretofore produced in mortisingqnachines by depressing the treadle is avoided.

My improvements consist in the peculiar construction and combination of parts hereinafter fully set forth.

Referring to the accompanying drawings, A indicates the table of a mortising-machine, and B the chisel, which has a vertical move ment over the same, derived from a pitman, C, which, through a link, 0, and intermediate mechanism, hereinafter described, has motion imparted to it from a shaft, (1, carrying an cecentric-wheel, D. From the wrist d of the eccentricextends a link, E, whose lower end is swiveled 011 a wrist-pin, f, on a lever, F, which is secured by screws f f to a U-shaped bracket, G. If desired, the lever F and bracket G may be made in one piece. The bracket G has trunnions g g, which have bearings in a fixed fran1e-piece, H, and these trunnions form the fulcra of the lever F.

I represents a block, made, preferably, in three pieces, I I I having a dovetail groove, 2', which receives the lever F, on which latter 50 said block may be slid lengthwise. The

block I has two lateral pivot-studs, i i, to

which are attached the lower ends of the link 0 and the rear end of a togglelever, K, respectively. XVhen the studs 1' i are aligned with the trunnions g g, the block I has the same center of motion as the lever, and the link 0 is motionless; but when the said block is slid backwardly toward the pin f said link will be moved up and down, imparting motion to the pitman O, and thereby to the chisel B. The forward end of toggle-lever K is pivoted at 70 on an extension, 71, of the frame-piece H.

*L is a treadle, pivoted at Z on a stationary bracket, Z, and pivotally connected by a link, M, with the toggle-lever K. Said link has an elongated slot, at, through which passes a pin,

, whereby connection is made with the treadle L.

N is a counterbalance-lever, having at one end a weight, n, and at the other a rod, 02, whose 70 lower end is connected to the treadle L by the same pin, Z, which connects said treadle with the slotted link on. Normally, the weighted lever N holds the treadle in the position indicated in dotted lines in Fig. 3, at which time the slide I is centered with the lever F and no motion is communicated to the chisel. \Vhen, however, the treadle is depressed, as shown in full lines, the toggle becomes straightened out or extended, sliding the block I back on the lever F, causing it to vibrate vertically with said lever, and thus communicate motion to the chisel through the link 0 and pitman C. The extent of movement of the chisel is governed by the distance which the block is moved 8 5 backwardly on the lever, and this in turn depends on the distance the treadle is depressed by the operator. To cause the chisel to operate, therefore, the workman depresses the treadle with his foot, and upon releasing o pressure on the treadle the latter is lifted by the weight 11,. causing the parts to resume their normal position and the chisel to cease moving, the latter stopping in an elevated position above the table. In depressing the treadle L 5 the pin 70' traverses the slot on in the link M, and thereby causes the shock or jar which would otherwise be felt by the workman to be avoided.

WVhat I claim as my invention is- 1. In a mortising-machine, the combination of the lever F, connected at one end to the pit- IOD man E and at the other to the U-shaped bracket G, said bracket being journaled, as shown at g g, with the sliding block I, connected to the trcadle L by toggle K and link on, and to the pitman Obylink c,whereby,when the block I is slid forward in line with the trunnions g g, by depressing the treadle the pitman will cease working, substantially as described.

2. The combination of pivoted lever 1 connected to the main driving-shaft of a mortising-machine, slide I, mounted thereon, and connected to the pitman G by rod 0, with treadle L, connected thereto by toggle-lever K HENRY FEYH.

lVitnesscs:

Jos. B. OoNNoLLY, WILL H. POWELL. 

